diff --git a/sass/_lists.scss b/sass/_lists.scss
index c2a7010..87bf77a 100644
--- a/sass/_lists.scss
+++ b/sass/_lists.scss
@@ -10,6 +10,7 @@ ol {
 		padding: 1em 0;
 		line-height:1.2em;
 		cursor:pointer;
+		transition: opacity .1s;
 	
 		&:before {
 			content:counter(procedure)".";